West Virginia mine was doing risky retreat mining

Vehicles are parked outside the Brody Mine No.1 in Wharton, W.Va., Tuesday May 13, 2014. Two workers died after they were trapped as the ground failed at the West Virginia coal mine. The ground failure occurred just about 8:45 p.m. Monday, trapping the workers, safety agency officials said. The miners' bodies were recovered, and safety personnel were on the site of Brody Mine No. 1 in Boone County, about 50 miles south of Charleston. Preliminary indications show that a coal burst was responsible, according to state officials and mine owner Patriot Coal. (AP Photo/Charleston Daily Mail, Marcus Constantino)
Photo by Associated Press